<template>
  <view class="shadow" :class="!show?'':'shadow-show'" :style="{backgroundColor:show?maskBg:'rgba(0,0,0,0)'}" @tap="tapMask">
    <view class="popups" :class="[theme]" :style="{top: popupsTop ,left: popupsLeft,flexDirection:direction}">
      <text :class="dynPlace" :style="{width:'0px',height:'0px'}" v-if="triangle"></text>
      <view v-for="(item,index) in popData" :key="index" @tap.stop="tapItem(item)" class="itemChild view" :class="[direction=='row'?'solid-right':'solid-bottom',item.disabled?'disabledColor':'']">
        <u-icon size="35" :name="item.icon" v-if="item.icon"></u-icon><span class="title">{{item.title}}</span>
      </view>
      <slot></slot>
    </view>
  </view>
</template>

<script>
export default {
  props: {
    maskBg: {
      type: String,
      default: "rgba(0,0,0,0)",
    },
    placement: {
      type: String,
      default: "default", //default top-start top-end bottom-start bottom-end
    },
    direction: {
      type: String,
      default: "column", //column row
    },
    x: {
      type: Number,
      default: 0,
    },
    y: {
      type: Number,
      default: 0,
    },
    value: {
      type: Boolean,
      default: false,
    },
    popData: {
      type: Array,
      default: () => [],
    },
    theme: {
      type: String,
      default: "light", //light dark
    },
    dynamic: {
      type: Boolean,
      default: false,
    },
    gap: {
      type: Number,
      default: 20,
    },
    triangle: {
      type: Boolean,
      default: true,
    },
  },
  data() {
    return {
      popupsTop: "0rpx",
      popupsLeft: "0rpx",
      show: false,
      dynPlace: "",
    };
  },
  mounted() {
    this.popupsPosition();
  },
  methods: {
    tapMask() {
      this.$emit("input", !this.value);
    },
    tapItem(item) {
      if (item.disabled) return;
      this.$emit("tapPopup", item);
      this.$emit("input", !this.value);
    },
    getStatusBar() {
      let promise = new Promise((resolve, reject) => {
        uni.getSystemInfo({
          success: function (e) {
            let customBar;
            // #ifdef H5

            customBar = e.statusBarHeight + e.windowTop;

            // #endif
            resolve(customBar);
          },
        });
      });
      return promise;
    },
    async popupsPosition() {
      let statusBar = await this.getStatusBar();
      let promise = new Promise((resolve, reject) => {
        let popupsDom = uni.createSelectorQuery().in(this).select(".popups");
        popupsDom
          .fields(
            {
              size: true,
            },
            (data) => {
              let width = data.width;
              let height = data.height;

             

              let y = this.dynamic
                ? this.dynamicGetY(this.y, this.gap)
                : this.transformRpx(this.y);

              let x = this.dynamic
                ? this.dynamicGetX(this.x, this.gap)
                : this.transformRpx(this.x);

              // #ifdef H5
              y = this.dynamic
                ? this.y + statusBar
                : this.transformRpx(this.y + statusBar);
              // #endif

              this.dynPlace =
                this.placement == "default"
                  ? this.getPlacement(x, y)
                  : this.placement;

              switch (this.dynPlace) {
                case "top-start":
                  this.popupsTop = `${y + 9}rpx`;
                  this.popupsLeft = `${x - 15}rpx`;
                  break;
                case "top-end":
                  this.popupsTop = `${y + 9}rpx`;
                  this.popupsLeft = `${x + 15 - width}rpx`;
                  break;
                case "bottom-start":
                  this.popupsTop = `${y - 18 - height}rpx`;
                  this.popupsLeft = `${x - 15}rpx`;
                  break;
                case "bottom-end":
                  this.popupsTop = `${y - 9 - height}rpx`;
                  this.popupsLeft = `${x + 15 - width}rpx`;
                  break;
              }
              resolve();
            }
          )
          .exec();
      });
      return promise;
    },
    getPlacement(x, y) {
      let width = uni.getSystemInfoSync().windowWidth;
      let height = uni.getSystemInfoSync().windowHeight;
      if (x > width / 2 && y > height / 2) {
        return "bottom-end";
      } else if (x < width / 2 && y < height / 2) {
        return "top-start";
      } else if (x > width / 2 && y < height / 2) {
        return "top-end";
      } else if (x < width / 2 && y > height / 2) {
        return "bottom-start";
      } else if (x > width / 2) {
        return "top-end";
      } else {
        return "top-start";
      }
    },
    dynamicGetY(y, gap) {
      let height = uni.getSystemInfoSync().windowHeight;
      y = y < gap ? gap : y;
      y = height - y < gap ? height - gap : y;

      return y;
    },
    dynamicGetX(x, gap) {
      let width = uni.getSystemInfoSync().windowWidth;
      x = x < gap ? gap : x;
      x = width - x < gap ? width - gap : x;
      return x;
    },
    transformRpx(params) {
      return (params * uni.getSystemInfoSync().screenWidth) / 375;
    },
  },
  watch: {
    value: {
      immediate: true,
      handler: async function (newVal, oldVal) {
        if (newVal) await this.popupsPosition();
        this.show = newVal;
      },
    },
    placement: {
      immediate: true,
      handler(newVal, oldVal) {
        this.dynPlace = newVal;
      },
    },
  },
};
</script>

<style lang="scss" scoped>
.title {
  margin-left: 20rpx;
}
.shadow {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  height: 100%;
  z-index: 9999;
  transition: background 0.3s ease-in-out;
  visibility: hidden;

  &.shadow-show {
    visibility: visible;
  }
}

.popups {
  position: absolute;
  padding: 20rpx;
  border-radius: 5px;
  display: flex;
  .view {
    display: flex;
    align-items: center;
    padding: 15rpx 10rpx;
    font-size: 25rpx;
  }
  .image {
    display: inline-block;
    vertical-align: middle;
    width: 40rpx;
    height: 40rpx;
    margin-right: 20rpx;
  }
}
.dark {
  background-color: #4c4c4c;
  color: #fff;
  .top-start:after {
    content: "";
    position: absolute;
    top: -18rpx;
    left: 10rpx;
    border-width: 0 20rpx 20rpx;
    border-style: solid;
    border-color: transparent transparent #4c4c4c;
  }
  .top-end:after {
    content: "";
    position: absolute;
    top: -18rpx;
    right: 10rpx;
    border-width: 0 20rpx 20rpx;
    border-style: solid;
    border-color: transparent transparent #4c4c4c;
  }
  .bottom-start:after {
    content: "";
    position: absolute;
    bottom: -18rpx;
    left: 10rpx;
    border-width: 20rpx 20rpx 0;
    border-style: solid;
    border-color: #4c4c4c transparent transparent;
  }
  .bottom-end:after {
    content: "";
    position: absolute;
    bottom: -18rpx;
    right: 10rpx;
    border-width: 20rpx 20rpx 0;
    border-style: solid;
    border-color: #4c4c4c transparent transparent;
  }
  .disabledColor {
    color: #c5c8ce;
  }
}
.light {
  color: #515a6e;
  box-shadow: 0upx 0upx 30upx rgba(0, 0, 0, 0.2);
  background: #fff;
  .top-start:after {
    content: "";
    position: absolute;
    top: -18rpx;
    left: 10rpx;
    border-width: 0 20rpx 20rpx;
    border-style: solid;
    border-color: transparent transparent #fff;
  }
  .top-end:after {
    content: "";
    position: absolute;
    top: -18rpx;
    right: 10rpx;
    border-width: 0 20rpx 20rpx;
    border-style: solid;
    border-color: transparent transparent #fff;
  }
  .bottom-start:after {
    content: "";
    position: absolute;
    bottom: -18rpx;
    left: 10rpx;
    border-width: 20rpx 20rpx 0;
    border-style: solid;
    border-color: #fff transparent transparent;
  }
  .bottom-end:after {
    content: "";
    position: absolute;
    bottom: -18rpx;
    right: 10rpx;
    border-width: 20rpx 20rpx 0;
    border-style: solid;
    border-color: #fff transparent transparent;
  }
  .disabledColor {
    color: #c5c8ce;
  }
}
.solid-bottom {
  border-bottom: 1px solid #f3f5f7;
}
.solid-right {
  border-right: 1px solid #ccc;
}
.popups .itemChild:last-child {
  border: none;
}
</style>
